Crystal Growth and Magnetic Properties of Pr3Co2+xGe7 and the Sn-Stabilized Ln(3)Co(2+x)Ge(7-y)Sn(y) (Ln = Pr, Nd, Sm)

Khan Mojammel A.; McCandless Gregory T.; Benavides Katherine A.; Martin Thomas J.; Palacios Adzuira M.; Samuel Anthony W. B.; Young David P.; Chan Julia Y.

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Crystal Growth and Magnetic Properties of Pr3Co2+xGe7 and the Sn-Stabilized Ln(3)Co(2+x)Ge(7-y)Sn(y) (Ln = Pr, Nd, Sm)

机译：PR3CO2 + XGE7的晶体生长和磁性和Sn-稳定的LN（3）Co（2 + x）Ge（7-Y）Sn（Y）（Ln = Pr，Nd，Sm）

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Single crystals of the ternary Pr3Co2+xGe7 and Ln(3)Co(2+x)Ge(7-y)Sn(y) (Ln = Pr, Nd, Sm) adopting a disordered version of the La3Co2Sn7 structure type have been prepared via flux-growth methods and characterized by single crystal X-ray diffraction. The structure consists of two lanthanide crystallographic sites with one occupying a cuboctahedral coordination environment and a second in a trigonal prismatic environment. The structure can also be described as an intergrowth of AuCu3 and CeNiSi2 structure types, and the stability of the germanide analogues requires Sn incorporation and Co site preferences. Magnetic properties of the Pr3Co2+xGe7-ySny series are highlighted with the Sn-substituted Pr3Co2.514(5)Ge6.66(7)Sn0.360(2) orders magnetically near 5.8 K, while the germanide Pr3Co2.3376(5)Ge2.056(7) exhibits magnetic transitions at 5.3 and 9.3 K, arising from the magnetic sublattices with field-dependent magnetization revealing three metamagnetic transitions at 0.46, 0.80, and 2.1 T.

机译：已经制备了采用无序版的LA3CO2SN7结构类型的单萜pR3CO2 + XGE7和LN（3）CO（2 + X）GE（7-Y）Sn（Y）（LN = Pr，Nd，Sm）的单晶通过助熔剂 - 生长方法，其特征在于单晶X射线衍射。该结构由两个镧系元素结晶位点组成，其中一个占据秘密的协调环境和三角形棱镜环境中的一秒。该结构也可以被描述为Aucu3和Cenisi2结构类型的晶间，并且德国类似物的稳定性需要Sn掺入和CO位点偏好。用SN取代的PR3CO2.514（5）GE6.66（7）SN0.360（2）磁性接近5.8 k，磁化PR3CO2 + XGE7-YSNY系列的磁性突出显示5.8 k，而德国PR3CO2.3376（5） GE2.056（7）在5.3和9.3 k下展示磁性转换，由磁性分组产生，具有现场磁化的磁化，显示在0.46,0.80和2.1 T处的三种心性转变。

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来源
《Crystal growth & design》 |2018年第10期|共7页
作者
Khan Mojammel A.; McCandless Gregory T.; Benavides Katherine A.; Martin Thomas J.; Palacios Adzuira M.; Samuel Anthony W. B.; Young David P.; Chan Julia Y.;
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作者单位

Louisiana State Univ Dept Phys &

Astron Baton Rouge LA 70803 USA;

Univ Texas Dallas Dept Chem &

Biochem 800 W Campbell Rd Richardson TX 75080 USA;

Univ Texas Dallas Dept Chem &

Biochem 800 W Campbell Rd Richardson TX 75080 USA;

Univ Texas Dallas Dept Chem &

Biochem 800 W Campbell Rd Richardson TX 75080 USA;

Univ Texas Dallas Dept Chem &

Biochem 800 W Campbell Rd Richardson TX 75080 USA;

Univ Texas Dallas Dept Chem &

Biochem 800 W Campbell Rd Richardson TX 75080 USA;

Louisiana State Univ Dept Phys &

Astron Baton Rouge LA 70803 USA;

Univ Texas Dallas Dept Chem &

Biochem 800 W Campbell Rd Richardson TX 75080 USA;

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中图分类晶体学;
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1. Crystal Growth and Magnetic Properties of Pr3Co2+xGe7 and the Sn-Stabilized Ln(3)Co(2+x)Ge(7-y)Sn(y) (Ln = Pr, Nd, Sm) [J] . Khan Mojammel A., McCandless Gregory T., Benavides Katherine A., Crystal growth & design . 2018,第10期

机译：PR3CO2 + XGE7的晶体生长和磁性和Sn-稳定的LN（3）Co（2 + x）Ge（7-Y）Sn（Y）（Ln = Pr，Nd，Sm）
2. Crystal growth, transport, and magnetic properties of Ln(3)Co(4)Sn(13) (Ln = La, Ce) with a perovskite-like structure [J] . Thomas EL, Lee HO, Bankston AN, International Journal of Quantum Chemistry . 2006,第6期

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3. Crystal growth, structures, magnetic and photoluminescent properties of NaLnGeO_4 (Ln = Sm, Eu, Gd, Tb) [J] . Jeongho Yeon, John B. Hardaway, Athena S. Sefat Solid state sciences . 2014,第Null期

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Crystal Growth and Magnetic Properties of Pr3Co2+xGe7 and the Sn-Stabilized Ln(3)Co(2+x)Ge(7-y)Sn(y) (Ln = Pr, Nd, Sm)

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